Patents

U.S. Patents and Publications | Foreign Patents & Applications | Post-Grant Proceedings

The Helferich Portfolio includes more than 50 issued patents worldwide, inclluding the following:

  • 39 U.S. Patents
  • 5 Japanese Patents
  • 4 Canadian Patents
  • 2 South Korean Patents
  • 2 Brittish Patents
  • 2 Mexican Patents
  • 1 Indian Patent
  • 1 Australian Patent
  • 1 South African Patent